Exhaust-stand.



A. J. HALL. EXHAUST STAND. APPLICATION TILED MBA, 1911.

1,039,524. I Patented se t. 24, 1912.

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ANDREW JACKSON HALL, OF CLINTON, ILLINOIS.

EXHAUST-STAND.

Specification of Letters Patent.

Application filed March 4, 1911.

Patented Sept. 24, 1912.

Serial No. 612,231.

To all whom "it may concern:

Be it known that I, ANDREW JAoxsoN I'IALL, a citizen of the UnitedStates, residing at Clinton, in the county of Dewitt and State ofIllinois, have invented certain new and useful Improvements in Exhaust-Stands, of which the following is a specification, reference being hadtherein to the accompanying drawing.

This invention relates to exhaust nozzles which are employed in steamengines to assist the draft.

' The invention has for its object to provide an exhaust nozzle of thiskind in which the discharge of the exhaust steam from the nozzle can beregulated so as to adapt it to different engines each of which requiresa different draft.

Referring to the accompanying drawings :Figure 1 is a view in crosssection of an exhaust nozzle constructed in accordance with thisinvention mounted in the forward end of a locomotive boiler beneath thesmoke stack thereof. Fig. 2 is a side view of the parts shown in Fig. 1in longitudinal section. Fig. 3 is an enlarged detail view of theexhaust nozzle detached. Fig. 4: is a view in vertical section of theexhaust nozzle. Fig. 5 is a cross section thereof. Fig. 6 is a plan viewof the upper end of the valve in the nozzle.

The exhaust nozzle constructed in accordance with this invention ismounted in the forward end of the boiler 1 of a locomotive beneath thesmoke stack 2 as shown in Figs. 1 and 2. The exhaust nozzle consists ofa main body portion 3 formed at its lower end with a flange 4 andsecured to the washer 5 of the locomotive by means of bolts 6 passingthrough bolt holes 7 in the flange 4. The body portion 3 is formed inits upper portion with a chamber 8 and with passage ways 9 in its lowerportion communicating at their upper ends with the chamber 8 andcommunicating with passages 9 extending to the cylinders of thelocomotive. The upper end of the body portion 3 is formed with a flange10, and seated upon the top of the body portion 3 is a detachable nozzle11 having a flange 12 located above its lower end. Seated in the upperend of the chamber 8 said flange 12 resting on the flange 10 of the bodyportion 3 and detachably secured thereto by means of nuts 13 which arethreaded upon bolts 14 projecting from the flange 10. Exhaust steam fromthe cylinders passes up through the chamber 8 and through and out of thenozzle 11, thereby creating a draft in the front end of the locomotiveboiler which communicates with the fire box through fines not shown.This exhaust increases the draft on the fire to the proper height tomaintain the steam pressure in the boiler.

The numeral 15 indicates a wall in the lower end of the body portion 3which forms with the inner sides thereof the passage ways 9. The wall 15is formed with a vertical threaded passage way 16 into which is threadedthe lower end of a vertical pipe 17 which extends up through and beyondthe upper end of the nozzle 11. Connecting with the lower end of thepassage way 16 is a pipe 18, the pipes 17 and 18 communicating with thepassage way 16 and serving as a draw pipe to increase the draft on thefire when the engine is at a stand still or when it is not workingsteam. By means of having this pipe 17 adjustably secured in the opening16 it can be adjusted vertically so that the distance between the end ofthe pipe 17 and the smoke stack can be increased and decreased as it isdesired. By means of this, the draft on the fire can be regulated sothat the fire will burn slowly or rapidly when the engine is standingstill or not working steam.

As a second means to regulate the draft on the fire the nozzle isprovided with means for increasing or decreasing the size of itsdischarge opening and for this purpose a valve 19 is adjustably mountedon the pipe 17 and as here shown preferably by being threaded thereon,the pipe 17 having a threaded portion 20 on which the valve 19 isrotatably mounted and in threaded engagement therewith. The valve 19 hasits upper end formed with a projection 19 in the shape of a nut to whicha wrench may be applied to adjust the valve on the pipe 17. The valve 19is formed with bulging sides which may either curve longitudinally orhave upper and lower inclined portions 21 whereby when the valve 19moves downward on the tube 20 the opening in the upper end of the nozzle11 will be enlarged, and when the valve 19 is moved upward on the tube20 the opening of the nozzle 11 will be diminished. By this means adraft is increased by permitting a greater amount of exhaust steam toescape from the nozzle 11 or decreased by permitting a smaller amount ofexhaust steam to escape from the nozzle. The increase in the amount ofsteam discharged from the nozzle will increase the draft on the firewhich will reduce the back pressure on the cylinder and cause a savingin the fuel.

It will be seen that by means of this invention that the discharge ofthe exhaust steam from the nozzle may be regulated so as to increase ordiminish the draft and thereby regulate the draft according to theparticular kind of engine with which the exhaust nozzle is employed.

It will thus be seen that the stand is provided with two means forregulating the draft of the fire so that the stand is capable ofregulating the draft no matter whether the engine is moving or not.

What I claim is In an exhaust stand of the kind described, a base havinga pair of inlet ports separated by a diaphragm, said base further Copiesof this patent may be obtained for five cents each, by addressing theCommissioner of Patent,

draw pipe may be varied and the position of the valve on the draw pipebe also varied independently one of the other.

In testimony whereof I hereunto afiix my signature in presence of twowitnesses.

ANDREW JACKSON HALL. "Witnesses:

GEORGE T. NIOKLES, DICKERSON Woon.

Washington, D. C.

